Allergic diseases in the elderly.
D000368:Aged; D001249:Asthma / Q000453:epidemiology; D003877:Dermatitis, Contact / Q000453:epidemiology; D003937:Diagnosis, Differential; D004342:Drug Hypersensitivity / Q000453:epidemiology; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology*; D008297:Male; D006255:Rhinitis, Allergic, Seasonal / Q000453:epidemiology